Dynamo-electric machine



(No Model.) 2 Sheets-Sheet 1. G. J. VAN DEPOELE.

DYNAMO ELECTRIC MACHINE.

No. 275,549. Patented Apr. 10, 1883.

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{No Model.) 2 Sheets-Sheet 2. G. J. VAN DEPOELE.

DYNAMO ELECTRIC MAGHINE. No. 275,549. Patented Apr. 10,1883.

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CHARLES J. VAN D EPOELE, OF CHICAGO, ILLINOIS.

DYNAMO-ELECTRIC MACHINE.

SPECIFICATION forming part of Letters Patent No. 275,549, dated April 10, 1883,

Application filed February ll, 1882. (No model.)

beinghadtotheaccompanyingdrawings,whicl1 v form a part of this specification.

The nature of this invention relates to certain new and useful improvements in the construction ofdynamo-electric machines,whercby better results are obtained, with a great economy in construction, than can be had in machines of the ordinary and known constructions.

The invention consists in the peculiar construction of the various parts and their combinations, as more fully hereinafter described.

Figure l is a side elevation of myimproved machine. Fig. 2 is an end elevation of the same. Fig. 3 is the iron frame or field-of-force magnet. Fig. 4 is a vertical central longitudinal section of the armature and shaft detached and enlarged. Fig. 5 is an end elevation of the armature shown in Fig. at. Fig. 6 is an elevation of one of the iron disks of the armature. Fig. 7 is a central horizontal section.

In the accompanying drawings, A represents a shaft running at each end in hearings or boxes A, which are situated in opposite ends of the yoke L, which surrounds and is secured to the outer shell of the machine, as hereinafter described. This shaft supports the armature, and, motion being given to the shaft by means of the pulley A, revolves the armature within the tield-of-forcc magnet. as shown in Fig. 3. This armature is formed of a series of iron disks, 0, secured at equal distances apart, as shown in Fig. 4, upon such shaft. The relation of these disks to each other is secured by placing upon the shaft and between the disks other disks,B,of equal thickness and size, which are made of vulcanized fiber, card-board, or any other suitable non-conductin g material.

D are flanges-one at each end of the armature -which, being forced thereto by the nuts E, hold the disks rigidly in their positions. The disks 0 may be round and solid,although it is preferable to stamp them out with the V- shaped corrugations, as shown in Figs. 5 and 6.

H are copper strips or ribbons, which are bent out and in over the edges of each of the iron disks, running down between such disks and over and in and out, as shown in Figs. 4 and 5. One end of each of these strips of copper is attached to insulated copper conductors- F, a series of which pass through the disks, there being the same number of conductors as there are of the copper strips, and the opposite ends of these conductors are attached to the commutator-sections G, which surround the insulating material I upon the shaft. The opposite terminal ends of the strips Hare connected, as shown in Fig. 5, not to the same conductor to which their opposite ends areattached, but to the next one in the series, for if connected to the same conductor the strip would be short-circuited within itself.

The iron disks 0 are covered on both sides thereof with paper impregnated with silicate of soda, white zinc, red lead, or any other oxide or other material, which, uniting with the silicate, is calculated to render the paper covering less liable to be affected by heat. Said paper is pasted onto the iron disks on both sides with a similar composition, and this will insulate all the disks from the copper strips H and prevent the destruction of the insulation of the armature by heat.

The yoke L, which supports the hearings or boxes for the shaft A, is cast in one piece, designed to embrace the center of the shell of the machine, and being located and secured at the vertical longitudinal central line, it is at the neutral point.

In Fig. 3, which represents the iron frame or field-magnet, F F are the polepieces, made of cast-iron. F F are the sides, made of soft iron, forming, with the pole-pieces F F, a single magnet, of which one of the pole-pieces F F forms the north and the other the south pole. Above and below the neutral central point embraced by the bearing-yoke L, this magnet is wound, for intense currents, with wire, such currents being required for are lights; but forincandescent lights, where quan tity currents are desired, it is sheathed with copper sheathing.

H are brush-holders, and B the brushes.

S are screws or bolts holding the sides of the magnet F to the poles F.

Having described the different parts of my invention, 1 will explain their functions when in operation.

Although the armature herein described can be used in any of the ordinary field-magnets such as are now constructed, still the fieldinag'net here used and explained has some advantages over those which are more cumbersome and ditt'erently constructed. As will be seen, the wrought-iron sides of the magnet touch only the pole-pieces F at thejunctions, where the screws S pass into such pole-pieces. This is done in order to make the whole face 1 take up the magnetism and bring it down toward the armature, as in case the faces F should touch the sides F broadly the magnetism would be carried more to the outside of the machine, and hence prove less effective in the armature. At the neutral poiutsN enough space is left uncovered to provide room for attachingg the bearing-yoke L. The sides or" the magnet F maybe made either in one solid piece or in several narrow pieces of soft iron, all attached rigidlyto the faces F by the screws A sleeve fitting loosely over one-halfsay the bottom-of the field'magnet is prepared, and upon this sleeve is wound the wire or the sheet-copperintended to magnetize said field-magnet. A similar sleeve is prepared in the top portion ofhalfot'said fieldmagnet, and likewise wound. Then said sleeves, with their proper conductors, are passed or slipped onto the field-magnet. Whenever it is desired to remove the armature, the upper sleeve is taken oil" and the screws Sare removed, when, by removing the tops of the boxes in the bearings, the armature can readily be taken out and replaced at will. The connections of the fieldcondnctors are as usual, and need not be explained. For different qualities of currents heavier and lighter ribbons of copper may be used.

No claim is here made to the employment of silicate of soda in combination with earthy substances or metal oxides for the purposes of insulation, as it will form the suhiectmatter of a separate application.

What I claim as my invention is- 1. In an armature, the copper insulated conductors F, passing; through the disksUB,substantially as and for the purposes set forth.

2. In an armature, the copper strips or ribbons wound upon an iron core composed of disks placed at equal distances from each other, the winding being executed from the center to the outer periphery of the iron disks, and from the outer periphery toward the center, and be tween the two adjacent disks, substantially as and for the purposes specified.

3. In an armature, the copper strips or ribbons wound parallel to the axis or" the shaft, and bending toward and from the axis of said shaft between each two adjacent iron disks, substantially as and for the purposes set forth.

4.. In an armature, the copper strips or ribbons wound from the axis to the periphery of its core, passing consecutively in and out between the iron disks, and properlyinsulated therefrom, and snitablyconneetcd for quantity or intensity, substantially as described.

CHARLES J. VAN DEPOELE.

Witnesses:

H. b. SPRAGUE, E. SCULLY. 

